Adding Google analytic

Hello

I want to add Google analytics to my website (www.esencia.me) however I have no footer.php file so Im not sure where to add the Code

Below is a list of files from the editor page and I have also included a link to the style sheet. Advice would be much appreciated. Thank you!

custom_functions.php
Theme Functions
(functions.php)
Homepage Page Template
(home.php)
init.php
Ingredients Page Template
(page_ingredients.php)
Landing Page Page Template
(page_landing.php)
No Sidebar Page Template
(page_nosidebar.php)
page_product_single.php
Products Page Template
(page_products.php)
Top Title Page Template
(page_toptitle.php)

StyleSheet http://pastebin.com/HMhUeJeb